The asthma-COPD overlap syndrome (ACOS): hype or reality?

The asthma - COPD overlap syndrome ( ACOS ) : hype or reality ?

Asthma and chronic obstructive pulmonary disease (COPD) are chronic diseases with high prevalence in the general population. Asthma affects 25 million Americans (18 million adults and 7 million children) (1), while about 14.2 million Americans are diagnosed with COPD and 9.8 million are estimated to have COPD that is undiagnosed (2, 3). A variable degree of airway inflammation, airway obstructi...

The Asthma COPD Overlap Syndrome: ACOS Epidemiology and Historical Perspective

The Asthma-COPD Overlap Syndrome.

Although in textbooks asthma and chronic obstructive pulmonary disease (COPD) are viewed as distinct disorders, there is increasing awareness that many patients have features of both. This article reviews the asthma-COPD overlap syndrome.

The Asthma-COPD Overlap Syndrome

Asthma and Chronic Obstructive Pulmonary Disease (COPD) are pulmonary disorders characterized by various degrees of airflow limitation, inflammation and tissue remodeling. Bronchial asthma, an allergic disease that develops in childhood, is physiologically characterized by reversible airflow obstruction. It has an episodic course and a generally favorable prognosis, as it responds well to anti-...

Asthma–COPD overlap syndrome (ACOS) in primary care of four Latin America countries: the PUMA study

BACKGROUND Asthma-COPD overlap syndrome (ACOS) prevalence varies depending on the studied population and definition criteria. The prevalence and clinical characteristics of ACOS in an at-risk COPD primary care population from Latin America was assessed. METHODS Patients ≥40 years, current/ex-smokers and/or exposed to biomass, attending routine primary care visits completed a questionnaire and...